Doubts about Asynchronous Input and Output

  node.js, question

According to nodejs, Asynchronous Input and Output said. So does it mean that the ability to deal with Asynchronous Input and Output at the same time is very high? Is there an io bottleneck? Because they read less. Please don’t spray.

Generally, IO processing speed is relatively slow, which is naturally a bottleneck.
The purpose of Asynchronous Input and Output is to separate the slow operation from the whole processing flow. After IO operation is completed, notify the main thread to retrieve the data.
It doesn’t require IO processing speed to be fast, and it can’t think fast. If it can quickly reach the same level as Central Processor, then don’t make any Asynchronous Input and Output, and directly synchronize serial processing.